Faculty of Science & Technology (FST): Recent submissions
Now showing items 3821-3840 of 4283
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Studies of the temperature dependence of retention in supercritical fluid Chromatography
(Department of Chemistry, 1988)The capacity factors for the chromatographic retention of naphthalene, fluorene, phenanthrene and pyrene in supercritical carbon dioxide using an octadecyl silate bonded-phase column have been measured between 300 and 400 ... -
LC-GC, SFC-GC and SFC and SFE-GC interfacing
(Department of Chemistry, 1988) -
Supercritical fluid chromatography of ecdsteroids.
(Department of Chemistry, 1988) -
Chromatography with supercritical fluids, in Piggott and A. Paterson (eds) Distilled beverage flavour: Recent developments.
(Department of Chemistry, 1989) -
Unified multidimensional microcolumn chromatography
(Department of Chemistry, 1989) -
Developmental and mortality responses of Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae) following partial feeding on Bt-transgenic maize
(2008)Objective: To determine i) the susceptibility of different instars of Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae) to Bt maize (expressing Cry1Ab) and ii) the ... -
Production of Coconut Diethanolamide by the Saponification-hydrolysis-amination Method
(Department of Chemistry, 2008) -
Unsuitability of current chemical science and technology education in Kenya for sustainable development
(Department of Chemistry, 2009) -
The First General Synthesis of 1,5-Dioxaspiro[3.2]hexanes,"
(Department of Chemistry, 1998) -
Ring Opening of 1,5-Dioxaspiro[3.2]hexanes: Selective Preparation of alpha-Heterofunctionalized- beta'-hydroxy Ketones or 2,2-Disubstituted Oxetanes
(Department of Chemistry, 1999)Abstract.................................. Image 2-Methyleneoxetanes have been converted into 1,5-dioxaspiro[3.2]hexanes with dimethyldioxirane. Reaction of the dioxaspirohexanes with a range of heteroatom nucleophiles, ... -
Synthesis of D -erythro-Dihydrosphingosine and D-xylo-phytosphingosine from a Serine-Derived 1,5-Dioxaspiro[3.2]hexane Template
(Department of Chemistry, 2002)[reaction: see text] A serine-derived 1,5-dioxaspiro[3.2]hexane template is shown to be a useful precursor for both aminodiol and aminotriol sphingoid bases by its conversion to D-erythro-dihydrosphingosine and ... -
On the influence of urbanization on the water budget in Nairobi city: A numerical study
(2004)The impact of the growth and development of the City of Nairobi on the water budget is simulated using a high-resolution limited-area numerical model. The water substance fields are modelled with full physics in a control ... -
Relationship Between ENSO parameters and the Trends and Periodic Fluctuations in East African Rainfall
(2007)The study investigated the relationship between ENSO parameters and the trends and periodic fluctuations in the East African seasonal and annual decadal rainfall. The monthly rainfall data for the period 1931–2004 was ... -
Anthraquinones of the roots of Pentas micrantha
(Department of Chemistry, 2013)Pentas micrantha is used in the East African indigenous medicine to treat malaria. In the first investigation of this plant, the crude methanol root extract showed moderate antiplasmodial activity against the W2- (3.37 ... -
Towards Improvement of Seasonal Rainfall Forecasting Through Model Output Statistics (Mos) Downscaling of Echam Forecasts Over Tanzania
(2008)Many economic activities such as Agriculture and hydroelectric power generation are dependent on the availability of water. Most of the water comes from rainfall The seasonal rainfall over Tanzania is highly variable both ... -
Myoglobin coadsorbed on electrodes from microemulsions provides reversible electrochemical catalysis. Langmuir, 2003, 19, 6976
(Department of Chemistry, 2003)The iron heme protein myoglobin (Mb) coadsorbs with surfactant onto glassy carbon, pyrolytic graphite, and platinum electrodes from microemulsions of sodium dodecyl sulfate or cetyltrimethylammonium bromide, water, oil, ... -
Simulation of the Impact of Deforestation on Rainfall in the Lake Victoria Basin
(2008)Over the past four decades, Lake Victoria basin has experienced drastic environmental changes on account of both natural and anthropogenic factors. The natural factors include prolonged droughts and the recent emergence ... -
Enzyme-like kinetics of ferryloxy myoglobin formation in films on electrodes in microemulsions. J. Phys. Chem. B 2005, 109, 24457
(Department of Chemistry, 2005)Covalently linked films of the ferric heme protein myoglobin and poly-l-lysine on pyrolytic graphite electrodes reacted with tert-butylhydroperoxide (tBuOOH) to form ferryloxy protein species according to Michaelis−Menten ... -
Wet periods along the East Africa Coast and the extreme wet spell event of October 1997
(2008)Extreme wet spells affect the East Africa Coast (EAC) during March to June (long rains) and October to December (short rains). While these spells are less frequent during the short rains, some of the most extreme wet spells ... -
Myoglobin retains iron heme and near-native conformation in DDAB films prepared from pH 5 to 7 dispersions. Electrochem Commun. 2006, 8, 455
(Department of Chemistry, 2006)A recent paper [M.T. DeGroot, M. Merkx, M.J.M. Koper, J. Am. Chem. Soc. 127 (2005) 16224] suggests that iron heme is released during casting films of myoglobin (Mb) and didodecyldimethylammonium bromide (DDAB) on pyrolytic ...